What Is "Blueberry" Weed and Do All "Blue Strains Descend From This Legend?

The cannabis strain Blueberry forever changed the weed game by introducing fruity aromas, juicy berry notes, and deep, richly colored hues to a legion of new plants that bear its name — and genetics.

 What Makes Blueberry So Damn Blue… and Berry?

Blueberry weed gets its blue and violet hues from anthocyanins, pigment molecules that only become visible where there’s no green chlorophyll on the buds or leaves. But anthocyanins, as far as we know, don’t do anything for the strain’s heady effects or its aromatic qualities. (Anthocyanins, however, may confer some health benefits.)